Improvement in lamps



L. J. ATWOOD.

Lamp.

No. 220,049. Patented Sept. 30,1879.

LEwIs J. ATwooD, or WATERBURY,

CONN., ASSIGNOR TO THE PLUME &

ATWOOD MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 220,049, latedSeptember 30, 1879; application tiled April 28, 1879.

To all whom tt may concern Be it known that I, LEWIS J. ATWooD, ofWaterbury, in the State of Connecticut, have invented an Improvement inStands for Lamps, Ink-Bottles, Sto., of which the followfrom the basewith facility for the purposes of cleaning or otherwise.

In Letters Patent No. 73,488 a lamp-burner is shown with a helicalspring around the draftplate for holding the chimney by frictionalcontact with its inner surface. I do not herein claim the helix itselfor the holding of such an article as a lamp-ohimney therewith. I havemade a rigid base and combined therewith the helix and a iiange upon thearticle to be connected to that base. f

1 am also aware that a helical spring has been used in a lamp-base toform a frictional contact with the tapering surface of a reservoir, andthereby steady the same in place, as shown in Letters Patent N o.187,766.

Inthe drawings, Figure l is a vertical section ot' the stand andlamp-reservoir, and Fig. 2 is a plan of the stand detached.

The bottle or reservoir a. is to be of glass or other suitable material,and it is made with a flanged bottom, b, around the lower part of thesides.

The upper part of the bottle may be of any desired size or shape, andmay be provided with a screw-collar at the upper end for a lamp-burner,or else it may have a stopper, according to the use to which the articleis to be put.

The base or stand into which this botttle is to be received consists ofa shallow dish or cup, d, the edges of which are vertical, o'r nearlyso, and are perforated with a row of holes. The

helix f is introduced into these holes by revolving it until its end has.passed in succession th rough each hole and the ends of the helixcometogether. The helix is stretched somewhat in this mode of introducing,and the contraction of such helix brings the same inward of the edge ofthe cup d; hence said helix grasps the bottle or other article,contracting above the ange b, and holds the same with the firmnessnecessaryfor the ordinary circumstances of use; but the helix isexpanded in the act of lifting the bottle or other article forcibly fromthe cup d, and is also expanded when the anged bottom of the bottle ispressed into its place again.

The cup d is surrounded by abase or stand, t, to which it is permanentlyconnected. For lamps this stand t is, by preference, of sheet metal,a-nd in the shape of an annular trough, as shown, with a handle, lm, atone side; but the same may be ot' open-work and of any desired shape.

1t will be apparent that if the bottle or other article is recessed atits under side with an inward iiange, b, and the helix compressed in theact of winding it into the holes in d, so that it will expand, then thebottle may surround and inclose the helix, by Vwhich it is connectedwith the base. The detail section, Fig. 3, illustrates thisconstruction.

I do not herein claim a helix for reta-ininga lamp-chimney or a globe bythe expansion or contraction of such helix against the glass or over aiiange. The same, however, has not been combined with a base adapted torest upon a table as a means for holding the lampreservoir or similararticle to such base.

I claim as my invention- The combination, with the base or stand t andthe lamp-reservoir or similar vessel to be supported thereby, of ahelical spring inter laced into holes in the base, and a iiange upon thereservoir or vessel passing beneath said helix, for the purposes and asset forth.

Signed by me this 22d day of April, 1879.

L. J. ATWOOD.

Witnesses:

GEO. T. PINCKNEY, CEAS. H. SMITH.

